Paper bag



PAPER BAG.

Patented Oct. 30, 1888.

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P. W. LBINBAGH. PAPER BAG.

Patented 008. 8o, 1888.

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(No Model.)

N. PETERS, Pham-Lithography. washington, D. C4

Witnesses Unire *rares FELIX lV. LEINBAOH, OF BETHLEHEM, PENNSYLVANIA.

PAPER BAG.

SPECIFICATION forming part of 'Letters Patent No. 391.805, dated October 30, 1888.

(,)riginal application tiled lllarch 12, 1886, Serial No. 194,961. Divided and this application filed September 10, 1858.

Serial No. 284,980.

(No model.)

To all whom it may concern.-

Be it known that l, FELIX W. LEINnAon, of Bethlehem, Pennsylvania, have invented an Improvement in Processes for Making Paper Bags, of which the following description and claim constitute the specification, and which is illustrated by the accompanying two sheets of drawings.

This invention is a process for making square-bottoni paper bags having inward bellows folds.

Figure l is a View of a length of tucked-paper tube. Fig. 2 is a cross-section of the same. Fig. 3 is a view of a bag-blank which is made by cutting four slits in the lower end of the tucked tube of Figs. 1 and 2 and then opening, out and folding down sundry of the aps thus formed. Fig. 4 is a view of the blank of Fig. 8 with its two side flaps folded back into place and with paste applied to the presented surfaces of the other two flaps. Fig. 5 is a View of the blank of Fig. 4 with one of the latter flaps folded and pasted down in place, and Fig. 6 is a View of the same with both iiaps thus folded and thus pasted and the bag thus completed. Fig. 7 is a perspective view vof the bag of Fig. 6 opened out for use, but

having its bottom upward in order to show the final appearance thereof. Fig. 8 is a View identical with Fig. 3. Fig. 9 is a view of the blank of Fig. 8 with its two side flaps folded back into place and with paste applied to the presented surfaces of its other two flaps. Fig. l() is a view of the blank of Fig. 9 with one of the latter flaps folded and pasted down in place, and Fig. ll is a View of the saine with both flaps thus folded and pasted and the bag thus completed. Fig. 12 is a perspective view of the bag of Fig. 1l opened out for use, but with the bottom upward to better show its construction.

To make the bag of Fig. 6,a length of tucked paper tube like that of Fig. 1 is taken and longitudinal slits are eut in its outer bends at the points indicated by the short lines a a a a in Fig. 2. rlhese slits terminate at the points inverse dotted line x a; of Fig. 1.

tion causes the formation of the blank of Fig. 3, having the four iiaps A, B, G, and D. Then the flaps A and B are folded down on lines coincident with the sides of the iaps Gand D, and after paste has been applied to the latter, as shown in Fig. 4, the iiaps C and D are successively folded down on lines coincident with the sides of the flaps A and B.

The bag of Fig. 11 is made in all respects like that of Fig. 6, except that the folds C and D in it are folded, iinally,down upon. the dotted lines y g/ and .e z, respectively, instead of upon lines coincident with the sides of the flaps A and B. This latter method of folding surely closes the minute openings which otherwise are apt to exist at the fourcorners of the bottom of the completed article. The bag of Fig. 1l is therefore better than the bag of Fig. 6 in that single respect, while the last-mentioned bag is better than the other in respect that the width o f its bottom is coextensive with the thickness of the opened bag, whereas the width of the bottom of the bag of Fig. 1l is somewhat less than the thickness of that bag when opened out.

The merit of this invention as compared with prior processes of making square-bottom bags resides in the ease with which it is performed and in the uniform distribution of paper throughout all parts of the bottoni of the resulting bag.

I do not herein claim the paper bag which l describe and show, because I do claim it in my application, No. 194,961, for Letters Patent of the United States of America.

l claim as my invention- That process of making a square-bottom paper bag from a length of tucked -paper tube which consists in cutting four slits in the lower ends of the outer bends of the tube, and then in opening out the lower end of the tube into the form shown in Fig. 3, and then in folding down and pasting together the four rectangular flaps A., B, C, and D, all substantially as de. scribed.

FELIX XV. LEINBACH.

Witnesses:

J. B. KEMERER, Roer. H. WoLLE. 

